So the Jews and Freemasons are conspiring to prevent children from contracting and spreading disease eh? Why just the Jews and Freemasons? I'm sure that the overwhelming majority of scientists that develop vaccines are atheists.

And even ignoring all that, why the hell is it bad to keep children healthy?

It's called herd immunity. It's about the only thing that would keep vulnerable twits like yourself safe from smallpox, measles, hepatitis, etc. You don't let kids get vaccinated, you can kiss your ass good-bye.